10 



BULLETIN 528, U. S. DEPARTMENT OF AGRICULTURE. 



CROPS 



JAM 



FEB. 



MAR 



APR. MAY JUN. 



JUL 



AUG 



SCR 



OCT. 



NOV 



oca 



MANURE 



CORN 



CULTIVATE 



■Bill .••...—■•«.. 



PL OW 1 



R OLL 

 ••—•—•••• I 



DISC HARROW 



■ ■■MSB 



SPRIN6 TOOTH HARROW 



5PIISE TOOTH HARRO W fit WEED 



DRILL FERTILIZER 



• ••* SBBBB 



I PLANT 



MA NURE 



CUT 



••••■ 



HUSK 



PLOW 



MANURE 



POTATOES 



CU LTIV ATE 

 PLOW SPF 



ROLL 

 DISC HARROW 



■ ■■ ■■■■>■■ mmm 



SPRING TOOTH HARROW 

 PLANT I 



■>■■■■■■■•■ af 



MARKET 



I 



PIG 



PICK UP &. BAG 

 HAUL 8c STORE 



OATS 



PLOW. 



JVOLL^ 



HARROW 



iEED 



CUT ^ 



SssK." 



HAUL TO BARN 



THRESH 



■c 



WHEAT 



P LOW 

 ROLL 

 DISC HARROW 



COT iSHOCK SPR. OR SPI KE TOOTH HARRY* 



HAULTOjaARN 



J THRES 

 ■«■■■■■■■■ •*■■■ 



i 



SEED 



MANURE 



SEED 



CLOVER 



CLOVER 

 8a 



TIMOTHY 



PLOW 

 ROLL 



Iroli 



HA RVEST [ 



0I5C HARR OW 

 RING OR SP IKE T OOTH 

 ME 

 SEED 



ALFALFA 



MANURE MANUR E L-MANURE 



I PLOW 

 DISC HAR ROW & ROLL 



m mmmmmmmmmm 



LIME 



■■■»■«■ 



SPRING OR SPIKE TOOTH HARROW 



• ■■■■»■>■>■■>■■■ 



FERTILIZER. IN^CULATfi 8t SEED 

 HARVEST I GUT. 2 CUT. SCUT 



Fig. 1.— Periods of performance of farm operations (Chester County, Pa.). The full line represents the 

 period when most of. the farmers perform these operations, and the dotted line gives the range within 

 which these operations may be performed. 



